What is printed when the following program is executed?

public class Main {
    public static int countChar(String s, char c) {
        if(s.length() == 0)
            return 0;
        int count = (s.charAt(0) == c) ? 1 : 0;
        return count + countChar(s.substring(1), c);
    }
    public static void main(String[] args) {
        System.out.println(countChar("banana", 'a'));
    }
}